 /* 通用样式 */
 body {
    margin: 0;
    padding: 0;
    font-family: 'Arial', sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background: #000;
    overflow: hidden;
}

.background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('./back/login-bg.jpg') no-repeat center center/cover;
    z-index: -1;
}

.wrapper {
    width: 90%;
    max-width: 400px;
    overflow: hidden;
    border: 2px solid rgba(255, 255, 255, 0.8);
    border-radius: 15px;
    background: rgba(0, 0, 0, 0.7);
    box-shadow: 0 0 15px rgba(255, 255, 255, 0.2);
}

.container {
    padding: 30px;
    text-align: center;
    box-sizing: border-box;
}

.form h2 {
    color: #fff;
    font-size: 24px;
    margin-bottom: 20px;
}

.form input {
    width: 90%;
    padding: 12px;
    margin: 10px 0;
    border: 2px solid rgba(255, 255, 255, 0.8);
    border-radius: 8px;
    font-size: 16px;
    background: transparent;
    color: #fff;
}

.form input:focus {
    border-color: #3498db;
    outline: none;
}

.form button {
    width: 90%;
    padding: 12px;
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    font-size: 18px;
    border: 2px solid rgba(255, 255, 255, 0.8);
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.3s ease, transform 0.2s ease;
}

.form button:hover {
    background: rgba(255, 255, 255, 0.2);
}

.form button:active {
    transform: scale(0.95);
}

.footer {
    margin-top: 20px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
}

.footer a {
    color: #3498db;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer a:hover {
    color: #1abc9c;
}

@media (max-width: 500px) {
    .form input, .form button {
        font-size: 14px;
        padding: 10px;
    }
}